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more WIP. ROM loading working, sorta. not loading saves or anything yet.

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This commit is contained in:
Arisotura
2021-12-29 15:42:30 +01:00
parent aa443c6bce
commit 9529356062
10 changed files with 353 additions and 98 deletions
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53
src/NDSCart.cpp
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@ -55,8 +55,6 @@ bool CartInserted;
u8* CartROM;
u32 CartROMSize;
u32 CartID;
bool CartIsHomebrew;
bool CartIsDSi;
NDSHeader Header;
NDSBanner Banner;
@ -1505,16 +1503,14 @@ void DeInit()
void Reset()
{
if (Cart) delete Cart;
Cart = nullptr;
CartInserted = false;
if (CartROM) delete[] CartROM;
CartROM = nullptr;
CartROMSize = 0;
CartID = 0;
CartIsHomebrew = false;
CartIsDSi = false;
if (Cart) delete Cart;
Cart = nullptr;
ResetCart();
}
@ -1624,7 +1620,8 @@ void DecryptSecureArea(u8* out)
//bool LoadROMCommon(u32 filelength, const char *sram, bool direct)
bool LoadROM(const u8* romdata, u32 romlen)
{
//NDS::Reset();
if (CartInserted)
EjectCart();
CartROMSize = 0x200;
while (CartROMSize < romlen)
@ -1654,10 +1651,10 @@ bool LoadROM(const u8* romdata, u32 romlen)
(u32)Header.GameCode[0];
u8 unitcode = Header.UnitCode;
CartIsDSi = (unitcode & 0x02) != 0;
bool dsi = (unitcode & 0x02) != 0;
u32 arm9base = Header.ARM9ROMOffset;
CartIsHomebrew = (arm9base < 0x4000) || (gamecode == 0x23232323);
bool homebrew = (arm9base < 0x4000) || (gamecode == 0x23232323);
ROMListEntry romparams;
if (!ReadROMParams(gamecode, &romparams))
@ -1667,7 +1664,7 @@ bool LoadROM(const u8* romdata, u32 romlen)
romparams.GameCode = gamecode;
romparams.ROMSize = CartROMSize;
if (CartIsHomebrew)
if (homebrew)
romparams.SaveMemType = 0; // no saveRAM for homebrew
else
romparams.SaveMemType = 2; // assume EEPROM 64k (TODO FIXME)
@ -1691,7 +1688,7 @@ bool LoadROM(const u8* romdata, u32 romlen)
if (romparams.SaveMemType >= 8 && romparams.SaveMemType <= 10)
CartID |= 0x08000000; // NAND flag
if (CartIsDSi)
if (dsi)
CartID |= 0x40000000;
// cart ID for Jam with the Band
@ -1719,7 +1716,7 @@ bool LoadROM(const u8* romdata, u32 romlen)
Key1_Encrypt((u32*)&CartROM[arm9base]);
}
}
printf("FAZIL");
CartInserted = true;
u32 irversion = 0;
@ -1731,7 +1728,7 @@ bool LoadROM(const u8* romdata, u32 romlen)
irversion = 2; // Pokémon HG/SS, B/W, B2/W2
}
if (CartIsHomebrew)
if (homebrew)
Cart = new CartHomebrew(CartROM, CartROMSize, CartID);
else if (CartID & 0x08000000)
Cart = new CartRetailNAND(CartROM, CartROMSize, CartID);
@ -1741,7 +1738,7 @@ bool LoadROM(const u8* romdata, u32 romlen)
Cart = new CartRetailBT(CartROM, CartROMSize, CartID);
else
Cart = new CartRetail(CartROM, CartROMSize, CartID);
printf("PFART\n");
if (Cart)
Cart->Reset();
/*{
@ -1762,14 +1759,14 @@ bool LoadROM(const u8* romdata, u32 romlen)
//if (Cart) Cart->LoadSave(sram, romparams.SaveMemType);
if (Cart && romparams.SaveMemType > 0)
Cart->SetupSave(romparams.SaveMemType);
printf("PROEUPRAOUTTE\n");
return true;
}
void LoadSave(const u8* savedata, u32 savelen)
{
{printf("CARTSAVE\n");
if (Cart)
Cart->LoadSave(savedata, savelen);
Cart->LoadSave(savedata, savelen);printf("SAVE FARTED\n");
}
/*bool LoadROM(const char* path, const char* sram, bool direct)
@ -1854,6 +1851,26 @@ int ImportSRAM(const u8* data, u32 length)
return 0;
}*/
void EjectCart()
{
if (!CartInserted) return;
// ejecting the cart triggers the gamecard IRQ
NDS::SetIRQ(0, NDS::IRQ_CartIREQMC);
NDS::SetIRQ(1, NDS::IRQ_CartIREQMC);
if (Cart) delete Cart;
Cart = nullptr;
CartInserted = false;
if (CartROM) delete[] CartROM;
CartROM = nullptr;
CartROMSize = 0;
CartID = 0;
// CHECKME: does an eject imply anything for the ROM/SPI transfer registers?
}
void ResetCart()
{
// CHECKME: what if there is a transfer in progress?